Your ESP’s support team told you the emails were delivered. Your dashboard shows a 99% delivery rate. But revenue from email dropped 30% last quarter. These two facts are not contradictory – they are the exact gap an email deliverability consultant exists to explain. Delivery rate measures whether a server accepted your message. Inbox placement […]

Estaba en la sala cuando un ingeniero de entregabilidad se levantó en el DS2026 y dijo, tranquilamente, que DMARC p=reject ya no era una práctica avanzada. Era el punto de partida. La mitad del público asintió. La otra mitad se quedó pálida. Esa reacción dice mucho. Durante años el sector habló de estos estándares de […]

I was in the room when a deliverability engineer stood up at DS2026 and said, quietly, that DMARC p=reject was no longer advanced practice. It was the floor. Half the audience nodded. The other half went pale. That reaction tells you something. For years the industry talked about these authentication standards as aspirational. In 2026, […]

SendPost analyzed 4 billion messages across 2025, and the headline number is blunt: emails with all HTTPS links hit a 98.1% delivery rate, while a single HTTP link in the body caused a measurable drop. LB Blair and Varun Jain presented the dataset at the Deliverability Summit 2026 in Barcelona, and the takeaways reshape what […]

At Deliverability Summit 2026 in Barcelona, Syed Alam of Postmastery walked through a dataset where roughly 18% of addresses suppressed under a standard hard/soft model were still valid recipients. They had been removed because a 5xx code looked terminal, or because a 4xx kept repeating. Both assumptions were wrong, and both were costing senders revenue […]

At Deliverability Summit 2026 in Barcelona this April, David Finger of Seznam stated it plainly: “p=none provides no real protection.” That single sentence reframed how the room thought about DMARC. For years, p=none was treated as a safe monitoring stance. In 2026, it is a reputation liability. Mailbox providers are scoring domains on enforcement posture, […]